Display Device Segment Arrangement for 3-bit Gradation
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Solution Overview
Problem
Existing display devices with memory-in-pixel systems face complexity in gradation expression and increased power consumption due to the need for precise control of multiple segments within each unit pixel, particularly when implementing multi-gradation displays.
Innovation Solution
A display device configuration utilizing a unit pixel composed of first to fourth sub-pixels with specific segment arrangements, including rectangular and L-letter regions, allowing for 3-bit gradation display with reduced complexity and power consumption by using a memory-in-pixel system that stores data in pixels, enabling efficient gradation expression and reduced data transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the number of segments is increased in each unit pixel to implement multi-gradation, then the gradation expression capability is improved, but the shape and arrangement of the segments become complicated
Solution Approach 1:
The invention divides each sub-pixel into multiple segments (first, second, and third segments) that can be independently controlled. This segmentation allows for multi-gradation display by selectively activating different segments, achieving 4 gradation levels (0, 1, 2, 3) without requiring complex continuous control mechanisms.
Solution Approach 2:
The patent employs asymmetric segment arrangements where the first, second, and third segments have different shapes and occupy different areas within each sub-pixel. This asymmetric design enables efficient gradation expression through area modulation while maintaining simple geometric forms for each segment, avoiding the need for complicated symmetric patterns.
2Adaptability or versatility
If multiple segments are controlled within each unit pixel for area gradation, then multi-gradation display is achieved, but power consumption increases
Solution Approach 1:
By segmenting each sub-pixel into independently controllable first, second, and third segments, the invention enables precise area gradation control. This allows the display to achieve multi-gradation by activating only the necessary segments for each gray level, optimizing power consumption by avoiding unnecessary activation of all segments.
Solution Approach 2:
The patent implements gradation control by changing the area parameter through selective segment activation. Different combinations of segments (first, second, third segments) are activated to achieve different gradation levels, allowing the system to express 4 gradations by varying which segments are on or off, thereby reducing overall power consumption compared to full-pixel activation.
3Manufacturing precision
If segments are arranged to achieve precise gradation control, then display quality is improved, but manufacturing complexity increases
Solution Approach 1:
The patent uses asymmetric L-shaped segments with clearly defined boundaries and areas. The first segment includes a first area, the second segment includes a second area, and the third segment includes a third area, with each having distinct geometric characteristics. This asymmetric design simplifies manufacturing by providing clear fabrication targets while achieving precise gradation control through area modulation.
Solution Approach 2:
By dividing each sub-pixel into three distinct segments (first, second, and third segments) with well-defined boundaries, the invention enables precise gradation control through controlled activation of these segments. The segmentation approach allows for straightforward manufacturing processes where each segment can be independently patterned and controlled, reducing overall manufacturing complexity.
Data Source
AI summary
According to one embodiment, a display device includes a unit pixel including first to fourth sub-pixels exhibiting different colors, each of the first to fourth sub-pixels includes first to third segments for displaying 3-bit gradation, the first segment being a rectangular region including first to fourth sides, the second segment being an L-letter region located on a side closer to a geometric center of the unit pixel than the first segment and formed along the first and second sides which intersect each other, the third segment being an L-letter region located on a side farther from the geometric center than the first segment and formed along the third and fourth sides which intersect each other.